8120085 has 8 divisors (see below), whose sum is σ = 12992160. Its totient is φ = 4330704.

The previous prime is 8120071. The next prime is 8120113. The reversal of 8120085 is 5800218.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8120085 - 2⁴ = 8120069 is a prime.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270655 + ... + 270684.

It is an arithmetic number, because the mean of its divisors is an integer number (1624020).

Almost surely, 2^8120085 is an apocalyptic number.

It is an amenable number.

8120085 is a deficient number, since it is larger than the sum of its proper divisors (4872075).

8120085 is a wasteful number, since it uses less digits than its factorization.

8120085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541347.

The product of its (nonzero) digits is 640, while the sum is 24.

The square root of 8120085 is about 2849.5762842921. The cubic root of 8120085 is about 200.9957425895.

The spelling of 8120085 in words is "eight million, one hundred twenty thousand, eighty-five".